# URS Corporation

1600 Perimeter Park Dr.

Morrisville, NC 27560



# AES ICR Test

AGY Units 1 & 2

Guayama, PR

Project # 39682175

PO# 226013.US



# Analytical Report

(0810-26)

EPA OTM 27

Particulate Matter



# EPA OTM 28

Condensible Particulate Matter



# Enthalpy Analytical, Inc.

Phone: (919) 850 - 4392 / Fax: (919) 850 - 9012 / www.enthalpy.com

2202 Ellis Road Durham, NC 27703 - 5518

## I certify that to the best of my knowledge a ll analytical data presented in this report:

 Have been checked for completeness

 Are accurate, error-free, and legible

 Have been conducted in accordance with approved prot ocol, and that all deviations and analytical

problems are summarized in the appropriate narrative(s)

This analytical report was prepared in Portable Document Format (.PDF) and contains  pages.

# Summary of Results

## Compound Sample ID / Particulate Matter (PM) Catch (g)

Unit 1 Run 1 Unit 1 Run 2 Unit 1 Run 4

Cyc Acetone Catch (g) 0.04131 0.05551 0.02793

2.5 PM Catch (g) 0.00156 0.00044 0.00138

Filter 0.02035 0.02225 0.02026

Total 0.06322 0.07820 0.04958

Unit 2 Run 1 Unit 2 Run 2 Unit 2 Run 3

Cyc Acetone Catch (g) 0.10472 0.07332 0.07193

2.5 PM Catch (g) 0.00183 0.00057 0.00247

Filter 0.01145 0.01129 0.01179

Total 0.11800 0.08518 0.08619

Field Blank Filter Blank #REF!

Cyc Acetone Catch (g) 0.00202 #REF!

2.5 PM Catch (g) -0.00035 #REF!

Filter 0.00015 0.00024 #REF!

Total 0.00216 #REF! Company

Analyst

Parameters

# Samples URS

KTH

EPA OTM-027

6 Runs, Blanks Client #

Job #

PO #

Report Date 39682175

0810-26

226013.US

8/25/2010

## Compound Sample ID / Condensible Particulate Matter (CPM) Weight (mg)

Unit 1 Run 1 Unit 1 Run 2 Unit 1 Run 4

Net Organic Catch 2.7 2.6 2.9

Corrected Inorganic 276.6 139.8 78.1

TB Corrected CPM 277.3 140.4 79.0

Unit 2 Run 1 Unit 2 Run 2 Unit 2 Run 3

Net Organic Catch 5.2 4.3 3.6

Corrected Inorganic 252.6 357.6 172.3

TB Corrected CPM 255.8 359.9 173.9

Filter Blank Run 8 Run 9

Net Organic Catch 0.4 0.0 0.0

Corrected Inorganic 0.2 -0.1 -0.1

TB Corrected CPM 0.0 -2.1 -2.1

Train Blank

Organic Catch 3.5 If Train Blank Corrected CPM is >2.0 mg,

Inorganic Catch 0.3 then sample correction is 2.0 mg.

CPM 3.7 Company

Analyst

Parameters

# Samples URS

KTH

EPA OTM-28

6 Runs, Blanks Client #

Job #

PO #

Report Date 39682175

0810-26

226013.US

8/25/2010

0810-26 res otm28 9/1/2010

# ResultsAnalysis of Particulate RecoverySample ID Unit 1 Run 1Unit 1 Run 2Unit 1 Run 4Unit 2 Run 1Unit 2 Run 2Unit 2 Run 3Field BlankFilter ID 0610-45 Dates 0610-46 Dates 0610-48 Dates 0610-54 Dates 0610-44 Dates 0610-51 Dates 0610-49 DatesFinal wt. (g) 1st 0.13710 8/17/10 0.13811 8/17/10 0.13882 8/17/10 0.12939 8/17/10 0.13166 8/17/10 0.12118 8/17/10 0.11629 8/17/10Final wt. (g) 2nd 0.13705 8/18/10 0.13805 8/18/10 0.13876 8/18/10 0.12935 8/18/10 0.13159 8/18/10 0.12109 8/18/10 0.11625 8/18/10Final Tare Weight (g) 0.116700.115800.118500.117900.120300.109300.11610Net filter catch (g) 0.020350.022250.020260.011450.011290.011790.000152.5 PM Acetone RinsesBeaker number 5337 Dates 5338 Dates 5339 Dates 5345 Dates 5346 Dates 5347 Dates 5344 DatesFinal wt (g) 1st 1.89177 8/17/10 1.88951 8/17/10 1.88753 8/17/10 1.89393 8/17/10 1.90153 8/17/10 1.90159 8/17/10 1.89072 8/17/10Final wt (g) 2nd 1.89178 8/18/10 1.88953 8/18/10 1.88755 8/18/10 1.89396 8/18/10 1.90154 8/18/10 1.90159 8/18/10 1.89073 8/18/10Beaker tare (g) 1.89021 8/13/10 1.88909 8/13/10 1.88617 8/13/10 1.89213 8/13/10 1.90097 8/13/10 1.89912 8/13/10 1.89107 8/13/10Acetone vol (mL) 129111586142.5 PM Catch (g) 0.001560.000440.001380.001830.000570.00247-0.00035Cyc Acetone RinsesBeaker number 5340 Dates 5341 Dates 5342 Dates 5348 Dates 5349 Dates 5350 Dates 5343 DatesFinal wt (g) 1st 1.92984 8/17/10 1.94087 8/17/10 1.91385 8/17/10 1.99717 8/17/10 1.96315 8/17/10 1.97376 8/17/10 1.89315 8/17/10Final wt (g) 2nd 1.92983 8/18/10 1.94088 8/18/10 1.91387 8/18/10 1.99713 8/18/10 1.96306 8/18/10 1.97370 8/18/10 1.89316 8/18/10Beaker tare (g) 1.88852 8/13/10 1.88537 8/13/10 1.88593 8/13/10 1.89241 8/13/10 1.88974 8/13/10 1.90177 8/13/10 1.89114 8/13/10Acetone vol (mL) 1081716301222Cyc Acetone Catch (g) 0.041310.055510.027930.104720.073320.071930.00202Total particulate (g)0.063220.078200.049580.118000.085180.086190.00216Client Reagent Blank Acetone AnalysisBlank beaker number 5351DatesBlank volume (mL) 76 DatesFinal wt (g) 1st 1.88934 8/17/10Beaker tare (g) 1.88904 8/13/10Final wt (g) 2nd 1.88935 8/18/10Max acetone residue (g) 0.0006Acetone residue (g) 0.0003Laboratory In-House Blank Acetone AnalysisBlank beaker number 5355DatesBlank volume (mL) 200 DatesFinal wt (g) 1st 1.92352 8/17/10Beaker tare (g) 1.92262 8/13/10Final wt (g) 2nd 1.92351 8/18/10Max acetone residue (g) 0.0016Acetone residue (g) 0.0009CompanyAnalystParameters# SamplesURSKTHEPA OTM-0276 Runs, BlanksClient #Job #PO #Report Date396821750810-26226013.US8/25/2010

## Analysis of Particulate Recovery

Sample ID Filter Blank Run 8 Run 9 Run

Filter ID 0610-53 Dates 0210-008 Dates 0210-101 Dates 0210-102

Final wt. (g) 1st 0.12002 8/17/10 0.00000 6/7/10 1P 0.00000 6/7/10 1P 0.00000

Final wt. (g) 2nd 0.11994 8/18/10 0.00000 6/7/10 7P 0.00000 6/7/10 7P 0.00000

Final Tare Weight (g) 0.11970 0.00000 5/6/10 0.00000 5/6/10 0.00000

Net filter catch (g) 0.00024 0.00 0.00 0.00

Total particulate (g) 0.00024 0.0 0.0 0.0



## Client Reagent Blank Acetone Analysis

Blank beaker number 5351 Dates

Blank volume (mL) 76 Dates Final wt (g) 1st 1.88934 8/17/10

Beaker tare (g) 1.889043 8/13/10 Final wt (g) 2nd 1.88935 8/18/10

Max acetone residue (g) 0.0006 Acetone residue (g) 0.0003



## Laboratory In-House Blank Acetone Analysis

Blank beaker number 5355 Dates

Blank volume (mL) 200 Dates Final wt (g) 1st 1.92352 8/17/10

Beaker tare (g) 1.92262 8/13/10 Final wt (g) 2nd 1.92351 8/18/10

Max acetone residue (g) 0.0016 Acetone residue (g) 0.0009 Company

Analyst

Parameters

# Samples URS

KTH

EPA OTM-027

6 Runs, Blanks Client #

Job #

PO #

Report Date 39682175

0810-26

226013.US

8/25/2010Analysis of Condensible Particulate RecoverySample ID Number Train BlankUnit 1 Run 1Unit 1 Run 2Unit 1 Run 4OrganicBeaker Number5327532453255326Initial Acetone Volume, mL 72142106124Initial MeCl2 Volume, mL 11412415492Initial MeCl2/Acetone Volume, mL 186266260216Lab MeCl2 Volume, mL165 Dates165Dates165Dates 165 DatesFinal Weight, g1.8978 8/17/10 1.9151 8/17/10 1.8979 8/17/10 1.8939 8/17/10Reweigh, Final, g1.8978 8/18/10 1.9152 8/18/10 1.8979 8/18/10 1.8939 8/18/10Beaker Tare, g1.8943 8/13/10 1.9125 8/13/10 1.8953 8/13/10 1.8910 8/13/10Net Organic Catch, mg3.52.72.62.9InorganicBeaker Number5194Dates5597Dates5598Dates5599DatesFinal Weight, g1.9098 8/24/10 2.1545 8/24/10 2.0250 8/24/10 1.9402 8/24/10Reweigh, Final, g1.9099 8/25/10 2.1542 8/25/10 2.0254 8/25/10 1.9406 8/25/10Beaker Tare, g1.9097 8/4/10 1.8771 8/14/10 1.8853 8/14/10 1.8618 8/14/10H2O FV, mL146521544508Removed Pre-aliquot, mL0.50.50.50.5Pre-aliquot CF1.001.001.001.00Resuspended Volume, mL 100.0100.0100.0100.0Removed Post-aliquot, mL 0.50.50.50.5Post-aliquot CF1.011.011.011.01Net Inorganic, mg0.3278.8140.979.3Ammonium Correction, mg 0.02.21.11.2Corrected Inorganic, mg0.3276.6139.878.1Condensible Particulate Matter, mg 3.7279.3142.481.0TB Corrected CPM, mg277.3140.479.0------------------------------------------------------------------Client Blank Analyses------------------------------------------------------------------Type BlankMeCl BlankType BlankH2O BlankType BlankAcetoneBeaker Number5352DatesBeaker Number5600DatesBeaker Number5353DatesTare weight, g1.8903 8/13/10Tare weight, g1.9213 8/23/10Tare weight, g1.8931 8/13/10Dry Residue Weight, g 1.8905 8/17/10 Dry Residue Weight, g 1.9229 8/24/10 Dry Residue Weight, g 1.8935 8/17/10Reweigh, Final, g1.8905 8/18/10Reweigh, Final, g1.9230 8/25/10Reweigh, Final, g1.8935 8/18/10MeCl2 Residue, g0.0002Water Residue, g0.0017Acetone Residue, g0.0005MeCl2 Volume, mL78Water Volume, mL148Acetone Volume, mL82Max. MeCl2 Residue, g 0.0016Max. Water Residue, g 0.0015Max. Acetone Residue, g 0.0006----------------------------------------------------------------In-House Blank Analyses------------------------------------------------------------------Type BlankMeCl BlankType BlankH2O BlankType BlankAcetoneBeaker Number5354DatesBeaker Number5601DatesBeaker Number5355DatesTare weight, g1.8994 8/13/10Tare weight, g1.9234 8/23/10Tare weight, g1.9226 8/13/10Dry Residue Weight, g 1.9007 8/17/10 Dry Residue Weight, g 1.9240 8/24/10 Dry Residue Weight, g 1.9235 8/17/10Reweigh, Final, g1.9007 8/18/10Reweigh, Final, g1.9241 8/25/10Reweigh, Final, g1.9235 8/18/10MeCl2 Residue, g0.0013Water Residue, g0.0007Acetone Residue, g0.0009MeCl2 Volume, mL225Water Volume, mL250Acetone Volume, mL200Max. MeCl2 Residue, g 0.0045Max. Water Residue, g 0.0025Max. Acetone Residue, g 0.0016CompanyAnalystParameters# SamplesURSKTHEPA OTM-286 Runs, BlanksClient #Job #PO #Report Date396821750810-26226013.US8/25/2010Analysis of Condensible Particulate RecoverySample ID Number Train BlankUnit 2 Run 1Unit 2 Run 2Unit 2 Run 3OrganicBeaker Number5327532153225323Initial Acetone Volume, mL 7211096128Initial MeCl2 Volume, mL 114102102124Initial MeCl2/Acetone Volume, mL 186212198252Lab MeCl2 Volume, mL165 Dates165Dates165Dates 165 DatesFinal Weight, g1.8978 8/17/10 1.9410 8/17/10 1.9364 8/17/10 1.9263 8/17/10Reweigh, Final, g1.8978 8/18/10 1.9411 8/18/10 1.9366 8/18/10 1.9264 8/18/10Beaker Tare, g1.8943 8/13/10 1.9359 8/13/10 1.9323 8/13/10 1.9228 8/13/10Net Organic Catch, mg3.55.24.33.6InorganicBeaker Number5194Dates5594Dates5595Dates5596DatesFinal Weight, g1.9098 8/24/10 2.1151 8/24/10 2.2531 8/24/10 2.0496 8/24/10Reweigh, Final, g1.9099 8/25/10 2.1147 8/25/10 2.2527 8/25/10 2.0492 8/25/10Beaker Tare, g1.9097 8/4/10 1.8611 8/14/10 1.8952 8/14/10 1.8761 8/14/10H2O FV, mL146500487504Removed Pre-aliquot, mL0.50.50.50.5Pre-aliquot CF1.001.001.001.00Resuspended Volume, mL 100.0100.0100.0100.0Removed Post-aliquot, mL 0.50.50.50.5Post-aliquot CF1.011.011.011.01Net Inorganic, mg0.3255.1359.7174.1Ammonium Correction, mg 0.02.52.21.8Corrected Inorganic, mg0.3252.6357.6172.3Condensible Particulate Matter, mg 3.7257.8361.9175.9TB Corrected CPM, mg255.8359.9173.9------------------------------------------------------------------Client Blank Analyses------------------------------------------------------------------Type BlankMeCl BlankType BlankH2O BlankType BlankAcetoneBeaker Number5352DatesBeaker Number5600DatesBeaker Number5353DatesTare weight, g1.8903 8/13/10Tare weight, g1.9213 8/23/10Tare weight, g1.8931 8/13/10Dry Residue Weight, g 1.8905 8/17/10 Dry Residue Weight, g 1.9229 8/24/10 Dry Residue Weight, g 1.8935 8/17/10Reweigh, Final, g1.8905 8/18/10Reweigh, Final, g1.9230 8/25/10Reweigh, Final, g1.8935 8/18/10MeCl2 Residue, g0.0002Water Residue, g0.0017Acetone Residue, g0.0005MeCl2 Volume, mL78Water Volume, mL148Acetone Volume, mL82Max. MeCl2 Residue, g 0.0016Max. Water Residue, g 0.0015Max. Acetone Residue, g 0.0006----------------------------------------------------------------In-House Blank Analyses------------------------------------------------------------------Type BlankMeCl BlankType BlankH2O BlankType BlankAcetoneBeaker Number5354DatesBeaker Number5601DatesBeaker Number5355DatesTare weight, g1.8994 8/13/10Tare weight, g1.9234 8/23/10Tare weight, g1.9226 8/13/10Dry Residue Weight, g 1.9007 8/17/10 Dry Residue Weight, g 1.9240 8/24/10 Dry Residue Weight, g 1.9235 8/17/10Reweigh, Final, g1.9007 8/18/10Reweigh, Final, g1.9241 8/25/10Reweigh, Final, g1.9235 8/18/10MeCl2 Residue, g0.0013Water Residue, g0.0007Acetone Residue, g0.0009MeCl2 Volume, mL225Water Volume, mL250Acetone Volume, mL200Max. MeCl2 Residue, g 0.0045Max. Water Residue, g 0.0025Max. Acetone Residue, g 0.0016CompanyAnalystParameters# SamplesURSKTHEPA OTM-286 Runs, BlanksClient #Job #PO #Report Date396821750810-26226013.US8/25/2010Analysis of Condensible Particulate RecoverySample ID Number Train BlankFilter BlankRun 8Run 9OrganicBeaker Number53275328Initial Acetone Volume, mL 720Initial MeCl2 Volume, mL 1140Initial MeCl2/Acetone Volume, mL 1860Lab MeCl2 Volume, mL165 Dates165Dates165.00 Dates 165.00 DatesFinal Weight, g1.8978 8/17/10 1.9048 8/17/10Reweigh, Final, g1.8978 8/18/10 1.9048 8/18/10Beaker Tare, g1.8943 8/13/10 1.9044 8/13/10Net Organic Catch, mg3.50.40.000.00InorganicBeaker Number5194Dates5195DatesDatesDatesFinal Weight, g1.9098 8/24/10 1.9082 8/24/10Reweigh, Final, g1.9099 8/25/10 1.9083 8/25/10Beaker Tare, g1.9097 8/4/10 1.9081 8/4/10H2O FV, mL14675Removed Pre-aliquot, mL0.50.50.500.50Pre-aliquot CF1.001.010.000.00Resuspended Volume, mL 100.0100.0100.00100.00Removed Post-aliquot, mL 0.50.50.500.50Post-aliquot CF1.011.011.011.01Net Inorganic, mg0.30.20.000.00Ammonium Correction, mg 0.00.00.140.10Corrected Inorganic, mg0.30.2-0.14-0.10Condensible Particulate Matter, mg 3.70.6-0.14-0.10TB Corrected CPM, mg-1.4-2.14-2.10------------------------------------------------------------------Client Blank Analyses------------------------------------------------------------------Type BlankMeCl BlankType BlankH2O BlankType BlankAcetoneBeaker Number5352DatesBeaker Number5600DatesBeaker Number5353DatesTare weight, g1.8903 8/13/10Tare weight, g1.9213 8/23/10Tare weight, g1.8931 8/13/10Dry Residue Weight, g 1.8905 8/17/10 Dry Residue Weight, g 1.9229 8/24/10 Dry Residue Weight, g 1.8935 8/17/10Reweigh, Final, g1.8905 8/18/10Reweigh, Final, g1.9230 8/25/10Reweigh, Final, g1.8935 8/18/10MeCl2 Residue, g0.0002Water Residue, g0.0017Acetone Residue, g0.0005MeCl2 Volume, mL78Water Volume, mL148Acetone Volume, mL82Max. MeCl2 Residue, g 0.0016Max. Water Residue, g 0.0015Max. Acetone Residue, g 0.0006----------------------------------------------------------------In-House Blank Analyses------------------------------------------------------------------Type BlankMeCl BlankType BlankH2O BlankType BlankAcetoneBeaker Number5354DatesBeaker Number5601DatesBeaker Number5355DatesTare weight, g1.8994 8/13/10Tare weight, g1.9234 8/23/10Tare weight, g1.9226 8/13/10Dry Residue Weight, g 1.9007 8/17/10 Dry Residue Weight, g 1.9240 8/24/10 Dry Residue Weight, g 1.9235 8/17/10Reweigh, Final, g1.9007 8/18/10Reweigh, Final, g1.9241 8/25/10Reweigh, Final, g1.9235 8/18/10MeCl2 Residue, g0.0013Water Residue, g0.0007Acetone Residue, g0.0009MeCl2 Volume, mL225Water Volume, mL250Acetone Volume, mL200Max. MeCl2 Residue, g 0.0045Max. Water Residue, g 0.0025Max. Acetone Residue, g 0.0016CompanyAnalystParameters# SamplesURSKTHEPA OTM-286 Runs, BlanksClient #Job #PO #Report Date396821750810-26226013.US8/25/2010MDL 0.09 (mg Ammonium)

MDL 0.26 (mg Sulfate)

Blank titrant amount (Vtb) 0.02 [Set this equal to the In-House Blank Titration Volume and then white out this note]

NH4OH normality 0.1 Lot # Sigma Aldrich 318620

Sample ID. Volume

Resuspended

(mL) Titration

Aliquot

Vol (mL) Aliquot Factor

(mL rec'd/aliq mL)

Train Blank 100 99.5 0.04 ND 1.01 0.26 ND 0.09 ND

Unit 1 Run 1 100 99.5 1.30 1.01 6.18 2.19

Unit 1 Run 2 100 99.5 0.66 1.01 3.09 1.10

Unit 1 Run 4 100 99.5 0.72 1.01 3.38 1.20

Unit 2 Run 1 100 99.5 1.46 1.01 6.95 2.46

Unit 2 Run 2 100 99.5 1.28 1.01 6.08 2.16

Unit 2 Run 3 100 99.5 1.09 1.01 5.17 1.83

Filter Blank 100 99.5 0.03 ND 1.01 0.26 ND 0.09 ND SO4 Catch

(mg) NH 4 OH

Titration

Vol (mL) Ammonium

equivalent

(mg) Company

Analyst

Parameters

# Samples URS

KTH

EPA OTM-28

6 Runs, Blanks Client #

Job #

PO #

Report Date 39682175

0810-26

226013.US

8/25/2010

# Narrative Summary

# Enthalpy Analytical Narrative Summary

Company 

## URS Corp. - RTP Client # 

## 39682175

Analyst 

## KTH Job # 

## 0810-26

Parameters 

## EPA OTM 27 PO # 

## 226013.US

# Samples 

## 6 Runs, Blanks Report Date 

## August 26, 2010

Custody Heather Tarjeft received the samples on 8/5/10 after being relinquished

by URS Corporation of Research Tria ngle Park, NC. The samples were

received at 24.4  C in good condition. Prior to, during, and after

analysis, the samples were kept under lock with access only to

authorized personnel by Enthalpy Analytical, Inc.

Analysis The samples were analyzed for particulate matter using EPA Other Test

Method (OTM) 27, Determination of PM 10 

## and PM 2.5 

## Emissions from

Stationary Sources (Constant Sampling Rate Procedures).

The filters were placed in a dessicat or for 24 hours. The filters were

weighed at minimum 6-hour interv als until constant weights were

achieved.

The volumes of the acetone rinses were measured and recorded. The

acetone rinses were transferred to tare weighed aluminum weighing

pans and evaporated using nitrogen in a vented chamber. The residues

were placed in a dessicator for 24 hour s. The residues were weighed at

minimum 6-hour intervals until constant weights were achieved.

All samples were weighed on a Sart orius Model ME 5-F balance (SN

23104965) certified by Security Scale Service, Inc. through July 15,

2011.

QC Notes Prior to weighing the samples, the laboratory requires that the balance is

challenged using weights that bracket the samples. Challenge weights

were inadvertently not measured on 8/13/10. The challenge weights

measured on both 8/12/10 and 8/14/10 met criteria.

All sample preparation and analytical holding times specified in the

method were met.

# Enthalpy Analytical Narrative Summary

(continued)

Reporting Notes Gravimetric analyses are considered to be accurate to ±0.5 mg.

Therefore, negative catch weights be tween 0 and –0.5 mg are set to zero

and no investigation is undertaken. Negative catch weights less than

-0.5 mg are investigated.

The filter tare weights were provided by the client.

The results presented in this report are representative of the samples as

provided to the laboratory.

# Enthalpy Analytical Narrative Summary

Company 

## URS Corp. - RTP Client # 

## 39682175

Analyst 

## KTH Job # 

## 0810-26

Parameters 

## EPA OTM 28 PO # 

## 226013.US

# Samples 

## 6 Runs, Blanks Report Date 

## August 26, 2010

Custody Heather Tarjeft received the samples on 8/5/10 after being relinquished

by URS Corporation of Research Tria ngle Park, NC. The samples were

received at 24.4  C in good condition. Prior to, during, and after

analysis, the samples were kept under lock with access only to

authorized personnel by Enthalpy Analytical, Inc.

Analysis The samples were analyzed for condensible particulate matter using the

procedures in EPA Other Test Method 28, Dry Impinger Method for

Determining Condensable Particulate Emissions from Stationary

Sources.

All samples were weighed on a Sart orius Model ME 5-F balance (SN

23104965) certified by Security Scale Service, Inc. through July 15,

2011.

QC Notes A field blank, filter blank, acetone blank, water blank, and methylene

chloride blank were received and analyzed with these samples.

The method specifies blank correcti ons are accomplished by subtracting

the particulate mass determined in the ‘Field Train Blank’ or 2 mg

(whichever is less) from the sample weight.

The inorganic results for the sample s were corrected for the ammonium

ions used to precipitate the sulf ate, per the formula in the Method

(Section 12.2.1).

All sample preparation and analytical holding times specified in the

method were met.

Reporting Notes Gravimetric analyses are considered to be accurate to ±0.5 mg.

Therefore, negative catch weights be tween 0 and –0.5 mg are set to zero

and no investigation is undertaken. Negative catch weights less than

-0.5 mg are investigated.

The results presented in this report are representative of the samples as

provided to the laboratory.

# General Reporting Notes

The following are general reporting notes that are a pplicable to all Enthalpy Analytical, Inc. data

reports, unless specifically noted otherwise.

 The acronym MDL represents the Minimum Detection Limit. Below this value the laboratory cannot

determine the presence of the analyte of interest reliably.

 The acronym LOQ represents the Limit of Quantification. Below this value the laboratory cannot

quantitate the analyte of interest within the criteria of the method.

 The acronym ND following a value indicates a non-detect or analytical result below the MDL.

 The letter J following a value indicates an analytical r esult between the MDL and the LOQ. A J flag

indicates that the laboratory can positively identify th e analyte of interest as present, but the value

should be considered an estimate.

 The letter E following a value indicates an analytical r esult exceeding 100% of the highest calibration

point. The associated value should be considered as an estimate.

 The acronym DF represents Dilution Factor. This number represents dilution of the sample during the

preparation and/or analysis process. The analyti cal result taken from a laboratory instrument is

multiplied by the DF to determine the final undiluted sample results.

 The addition of MS to the Sample ID represents a Matrix Sp ike. An aliquot of an actual sample is

spiked with a known amount of analyte so that a per cent recovery value can be determined. This shows

what effect the sample matrix may have on the target analyte, i.e. whether or not anything in the sample

matrix interferes with the analysis of the analyte(s).

 The addition of MSD to the Sample ID represents a Matrix Spike Duplicate. Prepared in the same

manner as an MS, the use of duplicate matrix spikes allows further confirmation of laboratory quality

by showing the consistency of results gained by performing the same steps multiple times.

 The addition of LD to the Sample ID represents a Laborat ory Duplicate. The analyst prepares an

additional aliquot of sample for testing and the resu lts of the duplicate analysis are compared to the

initial result. The result should have a difference value of within 10% of the initial result (if the results

of the original analysis are greater than the LOQ).

 The addition of AD to the Sample ID represents an Alte rnate Dilution. The analyst prepares an

additional aliquot at a different dilution factor (usu ally double the initial factor). This analysis helps

confirm that no additional compound is present and coel uting or sharing absorbance with the analyte of

interest, as they would have a different res ponse/absorbance than the analyte of interest.

 The Sample ID LCS represents a Laboratory Control Sample. Clean matrix, similar to the client sample

matrix, prepared and analyzed by the laborator y using the same reagents, spiking standards and

procedures used for the client samples. The LCS is used to assess the control of the laboratory’s

analytical system. Whenever spikes are prepared for our client projects, two extra spikes are prepared.

The extras (randomly chosen) are labeled with the asso ciated project number and kept in-house at the

appropriate temperature conditions. When the project samples are received for analysis, the LCSs are

analyzed to confirm that the analyte could be recovered from the media, separate from the samples

which were used on the project and which may have been affected by source matrix, sample collection

and/or sample transport.

# General Reporting Notes

(continued)

 Significant Figures : Where the reported value is much greater than unity (1.00) in the units expressed,

the number is rounded to a whole number of units, rather than to 3 significant figures. For example, a

value of 10,456.45 ug catch is rounded to 10,456 ug. Ther e are five significant digits displayed, but no

confidence should be placed on more than two significant digits.

 Manual Integration : The data systems used for processing w ill flag manually integrated peaks with

an “M”. There are several reasons a peak may be manually integrated. These reasons will be identified

by the following two letter designations. The peak was not integrated by the software “NI” , the peak

was integrated incorrectly by the software “II” or the wrong peak was integrated by the software

“WP” . These codes will accompany the analyst’s ma nual integration stamp placed next to the

compound name.

# Sample Custody

# This Is The Last Page

Of This Report.